2 * Driver for the ov9650 sensor
4 * Copyright (C) 2008 Erik Andrén
5 * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
6 * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
8 * Portions of code to USB interface and ALi driver software,
9 * Copyright (c) 2006 Willem Duinker
10 * v4l2 interface modeled after the V4L2 driver
11 * for SN9C10x PC Camera Controllers
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation, version 2.
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21 #include "m5602_ov9650.h"
23 static int ov9650_s_ctrl(struct v4l2_ctrl *ctrl);
24 static void ov9650_dump_registers(struct sd *sd);
26 /* Vertically and horizontally flips the image if matched, needed for machines
27 where the sensor is mounted upside down */
30 struct dmi_system_id ov9650_flip_dmi_table[] = {
34 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
35 DMI_MATCH(DMI_PRODUCT_NAME, "A6J")
41 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
42 DMI_MATCH(DMI_PRODUCT_NAME, "A6JC")
48 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
49 DMI_MATCH(DMI_PRODUCT_NAME, "A6K")
55 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
56 DMI_MATCH(DMI_PRODUCT_NAME, "A6Kt")
62 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
63 DMI_MATCH(DMI_PRODUCT_NAME, "A6VA")
70 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
71 DMI_MATCH(DMI_PRODUCT_NAME, "A6VC")
77 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
78 DMI_MATCH(DMI_PRODUCT_NAME, "A6VM")
84 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
85 DMI_MATCH(DMI_PRODUCT_NAME, "A7V")
89 .ident = "Alienware Aurora m9700",
91 DMI_MATCH(DMI_SYS_VENDOR, "alienware"),
92 DMI_MATCH(DMI_PRODUCT_NAME, "Aurora m9700")
98 static struct v4l2_pix_format ov9650_modes[] = {
107 .colorspace = V4L2_COLORSPACE_SRGB,
117 .colorspace = V4L2_COLORSPACE_SRGB,
127 .colorspace = V4L2_COLORSPACE_SRGB,
137 .colorspace = V4L2_COLORSPACE_SRGB,
142 static const struct v4l2_ctrl_ops ov9650_ctrl_ops = {
143 .s_ctrl = ov9650_s_ctrl,
146 int ov9650_probe(struct sd *sd)
149 u8 prod_id = 0, ver_id = 0, i;
150 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
153 if (force_sensor == OV9650_SENSOR) {
154 pr_info("Forcing an %s sensor\n", ov9650.name);
157 /* If we want to force another sensor,
158 don't try to probe this one */
162 PDEBUG(D_PROBE, "Probing for an ov9650 sensor");
164 /* Run the pre-init before probing the sensor */
165 for (i = 0; i < ARRAY_SIZE(preinit_ov9650) && !err; i++) {
166 u8 data = preinit_ov9650[i][2];
167 if (preinit_ov9650[i][0] == SENSOR)
168 err = m5602_write_sensor(sd,
169 preinit_ov9650[i][1], &data, 1);
171 err = m5602_write_bridge(sd,
172 preinit_ov9650[i][1], data);
178 if (m5602_read_sensor(sd, OV9650_PID, &prod_id, 1))
181 if (m5602_read_sensor(sd, OV9650_VER, &ver_id, 1))
184 if ((prod_id == 0x96) && (ver_id == 0x52)) {
185 pr_info("Detected an ov9650 sensor\n");
191 sd->gspca_dev.cam.cam_mode = ov9650_modes;
192 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(ov9650_modes);
197 int ov9650_init(struct sd *sd)
203 ov9650_dump_registers(sd);
205 for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) {
206 data = init_ov9650[i][2];
207 if (init_ov9650[i][0] == SENSOR)
208 err = m5602_write_sensor(sd, init_ov9650[i][1],
211 err = m5602_write_bridge(sd, init_ov9650[i][1], data);
217 int ov9650_init_controls(struct sd *sd)
219 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
221 sd->gspca_dev.vdev.ctrl_handler = hdl;
222 v4l2_ctrl_handler_init(hdl, 9);
224 sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops,
225 V4L2_CID_AUTO_WHITE_BALANCE,
227 sd->red_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops,
228 V4L2_CID_RED_BALANCE, 0, 255, 1,
230 sd->blue_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops,
231 V4L2_CID_BLUE_BALANCE, 0, 255, 1,
234 sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &ov9650_ctrl_ops,
235 V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_AUTO);
236 sd->expo = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_EXPOSURE,
237 0, 0x1ff, 4, EXPOSURE_DEFAULT);
239 sd->autogain = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops,
240 V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
241 sd->gain = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_GAIN, 0,
242 0x3ff, 1, GAIN_DEFAULT);
244 sd->hflip = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_HFLIP,
246 sd->vflip = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_VFLIP,
250 pr_err("Could not initialize controls\n");
254 v4l2_ctrl_auto_cluster(3, &sd->auto_white_bal, 0, false);
255 v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false);
256 v4l2_ctrl_auto_cluster(2, &sd->autogain, 0, false);
257 v4l2_ctrl_cluster(2, &sd->hflip);
262 int ov9650_start(struct sd *sd)
266 struct cam *cam = &sd->gspca_dev.cam;
268 int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
269 int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
270 int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
271 int hor_offs = OV9650_LEFT_OFFSET;
272 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
274 if ((!dmi_check_system(ov9650_flip_dmi_table) &&
276 (dmi_check_system(ov9650_flip_dmi_table) &&
283 /* Synthesize the vsync/hsync setup */
284 for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) {
285 if (res_init_ov9650[i][0] == BRIDGE)
286 err = m5602_write_bridge(sd, res_init_ov9650[i][1],
287 res_init_ov9650[i][2]);
288 else if (res_init_ov9650[i][0] == SENSOR) {
289 data = res_init_ov9650[i][2];
290 err = m5602_write_sensor(sd,
291 res_init_ov9650[i][1], &data, 1);
297 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA,
298 ((ver_offs >> 8) & 0xff));
302 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
306 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
310 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
314 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
318 for (i = 0; i < 2 && !err; i++)
319 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
323 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
327 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 2);
331 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
332 (hor_offs >> 8) & 0xff);
336 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, hor_offs & 0xff);
340 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
341 ((width + hor_offs) >> 8) & 0xff);
345 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
346 ((width + hor_offs) & 0xff));
350 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
356 PDEBUG(D_CONF, "Configuring camera for VGA mode");
358 data = OV9650_VGA_SELECT | OV9650_RGB_SELECT |
359 OV9650_RAW_RGB_SELECT;
360 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
364 PDEBUG(D_CONF, "Configuring camera for CIF mode");
366 data = OV9650_CIF_SELECT | OV9650_RGB_SELECT |
367 OV9650_RAW_RGB_SELECT;
368 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
372 PDEBUG(D_CONF, "Configuring camera for QVGA mode");
374 data = OV9650_QVGA_SELECT | OV9650_RGB_SELECT |
375 OV9650_RAW_RGB_SELECT;
376 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
380 PDEBUG(D_CONF, "Configuring camera for QCIF mode");
382 data = OV9650_QCIF_SELECT | OV9650_RGB_SELECT |
383 OV9650_RAW_RGB_SELECT;
384 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
390 int ov9650_stop(struct sd *sd)
392 u8 data = OV9650_SOFT_SLEEP | OV9650_OUTPUT_DRIVE_2X;
393 return m5602_write_sensor(sd, OV9650_COM2, &data, 1);
396 void ov9650_disconnect(struct sd *sd)
403 static int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
405 struct sd *sd = (struct sd *) gspca_dev;
409 PDEBUG(D_CONF, "Set exposure to %d", val);
412 i2c_data = (val >> 10) & 0x3f;
413 err = m5602_write_sensor(sd, OV9650_AECHM,
418 /* The 8 middle bits */
419 i2c_data = (val >> 2) & 0xff;
420 err = m5602_write_sensor(sd, OV9650_AECH,
426 i2c_data = val & 0x03;
427 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
431 static int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
435 struct sd *sd = (struct sd *) gspca_dev;
437 PDEBUG(D_CONF, "Setting gain to %d", val);
440 /* Read the OV9650_VREF register first to avoid
441 corrupting the VREF high and low bits */
442 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
446 /* Mask away all uninteresting bits */
447 i2c_data = ((val & 0x0300) >> 2) |
449 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
454 i2c_data = val & 0xff;
455 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
459 static int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
463 struct sd *sd = (struct sd *) gspca_dev;
465 PDEBUG(D_CONF, "Set red gain to %d", val);
467 i2c_data = val & 0xff;
468 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
472 static int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
476 struct sd *sd = (struct sd *) gspca_dev;
478 PDEBUG(D_CONF, "Set blue gain to %d", val);
480 i2c_data = val & 0xff;
481 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
485 static int ov9650_set_hvflip(struct gspca_dev *gspca_dev)
489 struct sd *sd = (struct sd *) gspca_dev;
490 int hflip = sd->hflip->val;
491 int vflip = sd->vflip->val;
493 PDEBUG(D_CONF, "Set hvflip to %d %d", hflip, vflip);
495 if (dmi_check_system(ov9650_flip_dmi_table))
498 i2c_data = (hflip << 5) | (vflip << 4);
499 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
503 /* When vflip is toggled we need to readjust the bridge hsync/vsync */
504 if (gspca_dev->streaming)
505 err = ov9650_start(sd);
510 static int ov9650_set_auto_exposure(struct gspca_dev *gspca_dev,
515 struct sd *sd = (struct sd *) gspca_dev;
517 PDEBUG(D_CONF, "Set auto exposure control to %d", val);
519 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
523 val = (val == V4L2_EXPOSURE_AUTO);
524 i2c_data = ((i2c_data & 0xfe) | ((val & 0x01) << 0));
526 return m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
529 static int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev,
534 struct sd *sd = (struct sd *) gspca_dev;
536 PDEBUG(D_CONF, "Set auto white balance to %d", val);
538 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
542 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
543 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
548 static int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
552 struct sd *sd = (struct sd *) gspca_dev;
554 PDEBUG(D_CONF, "Set auto gain control to %d", val);
556 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
560 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
562 return m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
565 static int ov9650_s_ctrl(struct v4l2_ctrl *ctrl)
567 struct gspca_dev *gspca_dev =
568 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
569 struct sd *sd = (struct sd *) gspca_dev;
572 if (!gspca_dev->streaming)
576 case V4L2_CID_AUTO_WHITE_BALANCE:
577 err = ov9650_set_auto_white_balance(gspca_dev, ctrl->val);
578 if (err || ctrl->val)
580 err = ov9650_set_red_balance(gspca_dev, sd->red_bal->val);
583 err = ov9650_set_blue_balance(gspca_dev, sd->blue_bal->val);
585 case V4L2_CID_EXPOSURE_AUTO:
586 err = ov9650_set_auto_exposure(gspca_dev, ctrl->val);
587 if (err || ctrl->val == V4L2_EXPOSURE_AUTO)
589 err = ov9650_set_exposure(gspca_dev, sd->expo->val);
591 case V4L2_CID_AUTOGAIN:
592 err = ov9650_set_auto_gain(gspca_dev, ctrl->val);
593 if (err || ctrl->val)
595 err = ov9650_set_gain(gspca_dev, sd->gain->val);
598 err = ov9650_set_hvflip(gspca_dev);
607 static void ov9650_dump_registers(struct sd *sd)
610 pr_info("Dumping the ov9650 register state\n");
611 for (address = 0; address < 0xa9; address++) {
613 m5602_read_sensor(sd, address, &value, 1);
614 pr_info("register 0x%x contains 0x%x\n", address, value);
617 pr_info("ov9650 register state dump complete\n");
619 pr_info("Probing for which registers that are read/write\n");
620 for (address = 0; address < 0xff; address++) {
621 u8 old_value, ctrl_value;
622 u8 test_value[2] = {0xff, 0xff};
624 m5602_read_sensor(sd, address, &old_value, 1);
625 m5602_write_sensor(sd, address, test_value, 1);
626 m5602_read_sensor(sd, address, &ctrl_value, 1);
628 if (ctrl_value == test_value[0])
629 pr_info("register 0x%x is writeable\n", address);
631 pr_info("register 0x%x is read only\n", address);
633 /* Restore original value */
634 m5602_write_sensor(sd, address, &old_value, 1);